Spinning tool and machine



Oct. 16, 1923. 1,471,010

J. N. SELVIG SPINNING TOOL AND MACHINE Filed Dec. 11, 1919 2 Sheets-Sheet 1 //7 ve mor: (Jo/7n N. Se/v/y Affy.

Oct. 16 1923. 1,471,010

J. N. SELVIG SEINNING TOOL AND MACHINE Filed Dec. 11 1919 2 Sheets-Sheet 2 /n 1/90 for: (/o/m N fie/W Patented Oct. 16, 1923.

UNITED STATES 1 1,411,010 PATENT OFFICE.

JOHN H. SELVIG, OF CHIGAGO, ILLINOIS, ASBIGNOB T0 WESTERN ELECTRIC COMPANY,

mcoaroaa'rnn, or new YORK, 1w. 2, a CORPORATION or New You. srnmnro 'roor. m uacnnm Application filed December 11, 1919. Serial No. 844,242.

To all whom it may concern:

Be it known that I, JOHN N. Snnvm, a subject of the King of Norway, residing at Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Spinnin Tools and Machines, of which the following is a full, clear, concise, and exact description.

M present invention relates to special macli inery' and more particularly to ma chines for forming tubular bodies and it has for its object .to provide a simple and convenient apparatu for flaring the ends of tubes. To these and other ends the invention resides in certain improvements and combinations of parts all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification.

In the drawings: Fig. 1 is a perspective view of an apparatus constructed in accordance with and illustrating one embodiment of my invention; Fig. 2 is an enlarged perspective view of the tool holder and carrier with parts broken away, and Fig. 3 is an enlarged fra entary perspective view ofthe article ti machine is designed to' make. Similar reference numerals throughout the several views indicate the same parts.

The machine of the present embodiment is designed particularly for flaring the base ends of the glass tubes used as stems in vacuum tubes or electric li ht bulbs in the manner shown in Fig. 3. R eferring to Fig. 1, 1 indicates a base carryin three posts or standards 2, 3 and 4, the l ast named two of which are offset with respect to the first. The p'ost 2 supports a turret chuck 5, the four chuck elements 6 of which are driven by a pulley 7 and belt 8 running to a suitable source of power. The turret itself is rotated intermittently by means of handles 9- successivel to present the workpieces held by the in ividual chucks, in alinement with the tool support, hereinafter described.

The turret is rotated to the left and the glass tube or workpiece is inserted at the position indicated at A or D; u devices hereinafter described as it passes to and while in the forming position B, at

which position it is acted upon by the tool and is removed at the POSltIODC.

The heating apparatus consists, in the present instance, of two opposed pair of is heated bv be blow ipes 10 of any suitable character, provid d with directing hoods 11 the pair or set on one side being supported on the standard 3 in a position to direct flames upon the workpieces as they pass to B position and while being acted upon b the tool to maintain the glass soft and p iable. The other air may be suitably mounted on the stan ard 4.

The forming tool is of the round nose cylindrical form clearly shown at 12 in F igure 2. It is inserted in the workpiece axially a suitable distance as shown in Figure 2 in full lines, according to the size of the flare that it is desired to produce and is then tilted with a movement that simultaneously withdraws it so that it first engages the end edge of the tube and presses it outwardly. The round nose travel down the side of the tube and finally effects the change in shape indicated by the dotted lines in Flgure 2, the final position of the tool also being shown producing these movements, there is provided the following mechanism.

On the standard 4 is secured a sto collar 13 that is clamped in place by a It 14 and carries stop pins 15 and 16. 'Above the collar is-a hub 17 by means of which the swinging support in the form of an arm 18, is pivoted to the standard and adapted to move between the stop pins 15 and 16. A split collar 19, into of the arm 18, carries an arcuate guide 21 which is secured to the collar by a bolt 20, the split supporting collar being 'oined to it at its lower end so that the guicle is held upright in a plane parallel to the axes of the turret chucks 6. Slidable on the guide is a carria e 22 having a rearwardly projecting fixe operating handle 23. e carriage is preferably made of two recessed arcuato in dotted lines. For

gral with the outer end close ball bearings 24 running in ball races 25 and 26 in the carriage and guide, respectively. The spindle 27 of the tool 12, which rotates to reduce the friction of the tool against the glass, is supported in ball arings 28 in the carriage so that the tool is disposed substantially radially of the guide. In the present instance, it is not exactly radial for if it were, the tool would tilt on a center lying in its own axis or in the prolongation thereof and the withdrawing motion shown by the full and dotted llU lines in Figure 2, would not occur. In that figure, the center upon which the arcuate guide is developed lies below the end of the tool and the axis of the workpiece. The carriage 22 is normally held on the u per portion of the guide as shown in t iie figures, to aline the tool 12 in the axis of a workpiece whose chuck is in the position B, by a spring 29 connected to a pin 30 on the carriage and to a rearwardly extending arm 31 fixed to the upper end of the ide.

T e supporting arm 18 is normally held in a retracted position against the stop 16 by a spring 32 coiled about the standard 4 in a recess 33 of the collar 13 and hub 17 and having its ends acting upon these two last named parts, respectively.

When the turret is being rotated between operations of the tool, the latter is in its retracted position with the arm 18 in contact with the stop 16. The tool is operated by grasping the handle 23 and moving it forward, thereby bringing the tool 12 endwise and axially into the new workpiece the chuck of which has reached the position B, and depressing the handle 23 thereafter, effects the forming operation by tilting the tool in the tube in the manner previously described.

The extent to which the tool enters the tube is conveniently controlled by an adjustment of the stop collar 13 to different rotative positions on the standard 4.

What is claimed is:

1. In a machine for formin combination with a rotary wor a forming tool, a swinging support therefor adapted to carry the tool into and out of the work in a substantially axial direction and a tool holder movable in an arcuate path on the support to tilt the tool angularly with respect to the work-piece.

2. In a machine for forming tubes, the combination with a rotary work holder, of a forming tool, a swinging support there for adapted to carry the tool into and out of the work in a substantially axial direction and a tool holder movable in an arcuate path on the support in a transverse plane relatively to the swinging movement of the latter to tilt the tool angularly to the workpiece.

3. In a machine for flaring tubes, the combination with a rotary work holder, of a spinning tool, a swinging support therefor adapted to carry the tool into and out of the work in a substantiall axial direction, and a tool holder movab e in an areaate, ath on the support on a center located in t region of the end of the tool to tilt the latter angularly to the work-piece.

4. In a machine for flaring tubes, the combination with a rotary work holder, of a spinning tool, an arcuate guide for the tubes, the holder, of

tool upon which it is slidably movable .to angular positions relatively to the work, and a pivoted arm supporting the guide to carry the tool endwise into and out of a work-piece in the holder.

5. In a machine for flaring tubes, the combination with a rotary work holder, of a spinning tool, an arcuate guide for the tool upon which it is substantially radially disposed and is slid-ably movable to angular positions relatively to the work, a handle for moving the tool on the guide, and a pivoted arm supporting the guide to carry the tool endwise into and out of a workpiece in the holder.

6. In a machine for flaring tubes, the combination with a rotary work holder, or an arcuate guide, a carriage slidable thereon and having a handle, a substantially radially disposed tool rotatable in the carria e and normally centered with respect to t e work holder and a swinging arm supporting the guide to swing the tool endwise mto or out of a work-piece in the holder.

7. In a machine for flaring tubes, the combination with a rotary work holder, of an arcuate guide, a substantially radially disposed tool slidable in the guide and normally withdrawn from the work holder, a swinging arm supporting the guide to swing the tool endwise into or out of a work-piece in the holder and springs actin upon the arm and guide. respectively, tending to move the tool to the said normal position.

8. In a machine for flarin tubes, the combination with a rotary W05! holder, of an arcuate guide, a carriage slidable thereon and having a handle, a substantially radially disposed tool rotatable in the carriage and normally withdrawn from the work holder, a swinging arm supporting the guide to swing the tool endwise into or out of a work-piece in the holder, and springs acting upon the arm and guide, respectively, tending to move the tool to the said normal position.

9. In a machine for flaring tubes, the combination with a spinning tool and a blow pipe for directing a flame toward the operative osition of said tool, of a turret rotatable a out a horizontal axis and having a plurality of rotatable work holding chucks and adapted to present a plurality of work pieces successively to the flame and to the tool.

10. In a machine for flaring tubes, the combination with a spinning tool and a blow pipe for directing the flame toward the operative osit ion of said tool, of a turret having a p urality of work holders rotatably mounted thereon and adapted to present a plurality of workpieces successively to the flame and to the tool, and a single shaft for simultaneously rotating said work holders.

11. In a machine for flaring tubes, a carrier, aplurality of rotatable tube holders,

means for simultaneously rotating said tube holders, means for heating the tubes and means for flarin said tubes while heated.

12. In a machine for flarin tubes, 9. carrier, means for advancing said carrier stepby-step, a plurality of tube holders, means for rotating said tube holders, means for heating said tubes, means for flaring said tubes while heated, said means comprising a flaring tool, means for advancing said tool toward said heated glass tube and means for withdrawing said tool from said heated glass tube.

13. In a machine for flarin tubes, a shaft, a carrier, a plurality of wor holders rotatably mounted on said carrier, said work holders being simultaneously rotated by said shaft, and a spinning tool for flaring tubes carried by said work holders.

14. In a machine for flaring tubes, a shaft, a carrier, a plurality of work holders rotatably mounted on said carrier, said work holders being simultaneously rotated by said shaft, means for heating tubes carried by said holders, and means for flaring said tubes while heated.

15; In a machine for flaring tubes, a rotary work holder, a spinning tool, a swinging support for said tool, said tool being slidably mounted on said support for movement about an axis substantially at right angles to the axis of said support.

16. In a machine for flaring tubes, a rotatable work holder, a spinning tool, a SW1!!! ing support for said tool, said tool being slidably mounted on said support for movement about an axis at right angles to the axis of said support, and resilient means for normally maintaining said tool substantially at right angles to the axis of said support.

17. In a machine for flaring tubes, a pivotally mounted arcuate support, and a tool slidabl mounted on said support.

18. n a machine for flaring tubes, a pivotally mounted arcuate support, and a too] slidably mountedon said support, said tool being arranged ofl' center with respect to said arcuate support.

In witness whereof, I hereunto subscribe my name this 3rd day of December A. D.,

JOHN N. SELVIG.

DISCLAIMER.

1,471,010.-Jalm 1V.- Seloig, Chicago Ill. Srrsmno TOOL AND Macrame. Patent dated October 16 1923. -D1sclaimer filed April 4, 1928, by the assignee,

I Western Electric C ompany, Imorpwoted,

Hereby enters this disclaimer to that part of the claims in said specification which are in the following words to wit:

9. In a machine for flaring tubes, the combination with a spinning tool and a blow pipe for directing a flame toward the operative position of said tool, of a tu ret rotatable about a horizontal axis and having a plurality of rotatable work h ding chucks and adapted to present a plurality of work pieces successively to the 10. In a machine for flaring tubes, the combination with a spinning tool and a blow pipe for directin the flame toward the operative position of said tool. of a turret having a pluraht of work holders rotatably mounted thereon and adapted to present a. plurality 0 work ieces successively to the flame and to the tool and a single shaft for simultaneous y rotating said work holders.

11. In a machine for flaring tubes, a carrier, a lurality of rotatable tube holders, means for simultaneously rotatin said tube hol ers, means for heating the tubes and means for flaring said tubes w ile heated. s

12. In a machine for flaring tubes, a carrier, means for advancing said carrier step-by-step, a plurality of tube holders, means for rotating said tube holders, means for heatin said tubes, means for flaring said tubes while heated. said means comprising a flaring tool, means for advancing said tool toward said heated glass tube and means for withdrawing said tool from said heated glass tube.

rotatably mounted on said carrier, said work holders being simultaneously rotated by said shaft, and a s in'nin tool for flarin tubes carried by said work holders.

14. In a machine or flaring tubes, 9. sha t, a carrier. a plurality of work holders rotatably mounted on said carrier, said work holders being simultaneously rotated by said shaft, means for heating tubes carried by said holders, and means for flaring said tubes while heated.

[Ofiicial Gazette May I, 1928.] 

